CN110919044B

CN110919044B - Tubular shaft part drilling tool and drilling method

Info

Publication number: CN110919044B
Application number: CN201911102738.8A
Authority: CN
Inventors: 李春英; 罗坚; 袁利娜; 唐湘林
Original assignee: AECC South Industry Co Ltd
Current assignee: AECC South Industry Co Ltd
Priority date: 2019-11-12
Filing date: 2019-11-12
Publication date: 2020-11-03
Anticipated expiration: 2039-11-12
Also published as: CN110919044A

Abstract

The invention discloses a drilling tool and a drilling method for a pipe shaft part, wherein the tool comprises: the clamping indexing seat assembly is provided with an installation positioning hole and connected with a clamping seat assembly, and the clamping seat assembly is used for clamping and fixing a second end of the tubular shaft to be machined, which is exposed out of the installation positioning hole. The outer wall of the clamping indexing seat assembly is provided with a plurality of first guide holes, a supporting support used for supporting the worktable on the clamping indexing seat assembly is in a regular polygon shape, and the number of the sides of the supporting support is twice of the number of the first guide holes. The outer wall of the clamping indexing seat assembly is also provided with a plurality of second guide holes, the clamping indexing seat assembly is also connected with an indexing bolt which has an alpha central angle with the second guide holes to be processed, and the indexing bolt is used for being inserted into the second processing holes of the previous row of processed hole groups to index the next row of processed hole groups.

Description

Tubular shaft part drilling tool and drilling method

Technical Field

The invention relates to the technical field of drilling and processing of tubular shaft parts, in particular to a drilling and processing tool for tubular shaft parts. In addition, the invention also relates to a drilling method for the tubular shaft parts, which is used for drilling the tubular shaft parts by using the drilling tool for the tubular shaft parts.

Background

The object part to be processed is shown in the attached drawing 1, three blind holes are uniformly arranged at intervals along the circumferential direction on the excircle of the first end of the object part, a first through hole group and a second through hole group which respectively extend along the axis are further arranged on the excircle of the object part, the first through hole group and the second through hole group respectively comprise a plurality of through holes which are sequentially arranged at intervals along the axis and vertically penetrate through the object part, the first through hole group and one of the blind holes are on the same axis, the central angle between the first through hole group and the second through hole group is 90 degrees, and the through holes in the first through hole group and the through holes in the second through hole group are arranged in a staggered mode one by one. The tool machining operation process of workers in the prior art is as follows:

firstly, processing one blind hole by using a drilling template; then, a first through hole group which is on the same axis with the blind hole is processed; then, one through hole in the machined first through hole group is utilized, and the other two blind holes are machined by using the angular indexing component; and finally, machining a second through hole group by using the angular positioning component by using one through hole in the machined first through hole group.

When the tool in the prior art is adopted for processing, the part can be processed only by four times of clamping and three times of indexing rotation, the processing operation is complicated, the labor intensity of workers is high, and the processing efficiency is low; positioning errors are easy to generate in the rotating process of the part, and the clearance between the indexing pin and the indexing hole of the part is large, so that the distances between the three blind holes and the end surface of the first end of the part are inconsistent, namely the part is machined out of tolerance; the tool is complex and heavy in structure and is inconvenient to carry.

Disclosure of Invention

The invention provides a drilling tool and a drilling method for pipe shaft parts, and aims to solve the technical problems of complex processing operation, high labor intensity of workers, low processing efficiency and easy processing of parts in the clamping processing of the tool in the prior art.

The technical scheme adopted by the invention is as follows:

the utility model provides a shaft class part drilling processing frock, a be used for treating to process the hollow shaft and carry out the clamping location so that drilling processing equipment will treat to process the hollow shaft machine-shaping and be the shaping hollow shaft, be equipped with a plurality of first processing holes that set up along the even interval of circumference on the excircle of shaping hollow shaft first end, still be equipped with on the excircle of shaping hollow shaft and arrange unitized processing punch combination along the axial interval, multiunit processing punch combination is laid along the circumference interval of shaping hollow shaft, wherein a set of processing punch combination and one of them first processing hole co-rotation generating line, central angle alpha has between two sets of adjacent processing punch combinations, and a plurality of second processing holes in two sets of adjacent processing punch combinations misplace each other and lay, the frock includes: the clamping indexing seat assembly is connected with a clamping seat assembly, and the clamping seat assembly is used for clamping and fixing a second end of the pipe shaft to be processed exposed out of the mounting positioning hole; the outer wall of the clamping dividing seat assembly is provided with a plurality of first guide holes which are uniformly arranged at intervals along the circumferential direction, the first guide holes are perpendicular to the installation positioning holes and are communicated with the installation positioning holes so as to be used for guiding the position and the direction of a first machining hole to be machined on a pipe shaft to be machined, a supporting support which is arranged on the clamping dividing seat assembly and used for supporting a workbench of drilling machining equipment is in a regular polygon shape, the number of edges of the supporting support is twice of the number of the first guide holes, and the supporting support is used for dividing the first guide holes when the clamping dividing seat assembly is rotated; the outer wall of the clamping indexing seat assembly is further provided with a plurality of second guide holes which are sequentially arranged at intervals along the axial direction, the second guide holes are perpendicular to the installation positioning holes and are communicated with the installation positioning holes, the plurality of second guide holes and one of the first guide holes share a rotating bus, the plurality of second guide holes are used for guiding the position and the direction of a second machining hole to be machined in a pipe shaft to be machined, the clamping indexing seat assembly is further connected with an indexing bolt which has an alpha central angle with the second guide hole to be machined, and the indexing bolt is used for being inserted into a second machining hole of a previous row of machined machining hole groups to index a next row of machining hole groups.

Furthermore, the clamping dividing seat assembly comprises a first multi-square support, a second multi-square support and an installation positioning body, and the installation positioning body is detachably connected between the first multi-square support and the second multi-square support; the mounting positioning hole is recessed from the end surface of the second multi-side support and sequentially penetrates through the second multi-side support and the mounting positioning body to the end surface of the first multi-side support connected with the mounting positioning body; the first multi-side support and the second multi-side support are respectively provided with a support; the first guide hole and the second guide hole are respectively arranged on the installation positioning body, and the indexing bolt is connected to the installation positioning body.

Furthermore, the first multi-square support comprises a supporting support with a regular polygon cross section and a limiting support fixedly connected with the end surface of the supporting support, and the end surface of the limiting support is respectively abutted against the end surface of the first end of the mounting and positioning body and the end surface of the first end of the pipe shaft to be processed so as to limit the pipe shaft to be processed along the axial direction; the second multi-square support comprises a supporting support with a regular polygon cross section and an installation support fixedly connected with the end face of the supporting support, the end face of the installation support is abutted against the end face of the second end of the installation positioning body, and the installation positioning hole penetrates through the second multi-square support from the end face of the supporting support of the second multi-square support along the axial direction.

Furthermore, the mounting positioning body is columnar, and two ends of the mounting positioning body are respectively connected with the first multi-square support and the second multi-square support after being propped against each other; the mounting positioning hole penetrates through the mounting positioning body along the axis; the plurality of first guide holes are uniformly arranged at intervals on the first end of the mounting positioning body close to the first multi-square support along the circumferential direction of the mounting positioning body, and each first guide hole extends inwards from the outer wall of the mounting positioning body along the radial direction; the plurality of second guide holes are sequentially arranged on the mounting positioning body at intervals along the axial direction of the mounting positioning body, the plurality of second guide holes and one of the first guide holes share a rotating bus, and each second guide hole penetrates through the mounting positioning body along the radial direction from the outer wall of the mounting positioning body; the outer wall of the mounting and positioning body is also provided with a mounting hole for mounting the indexing bolt, an alpha central angle is formed between the mounting hole and the second guide hole, and the mounting hole extends inwards from the outer wall of the mounting and positioning body along the radial direction and is communicated with the mounting and positioning hole.

Further, the tool further comprises a plurality of first drill bushings, a plurality of second drill bushings and a guide bushing; the first drill sleeves are respectively arranged in the corresponding first guide holes so as to limit and guide the movement of a drilling tool on the drilling processing equipment; the second drill sleeves are respectively arranged in the corresponding second guide holes so as to limit and guide the movement of the drilling tool on the drilling processing equipment; the guide bush is arranged in the mounting hole so as to limit and guide the insertion of the indexing inserted pin into the second machining hole; the top ends of the first drill bushing, the second drill bushing and the guide bushing do not extend out of the installation positioning body.

Furthermore, the section of the mounting positioning body is in a regular polygon shape, and the number of the sides of the mounting positioning body is equal to that of the sides of the supporting support; the top edge of the mounting positioning body is provided with a processing groove which is concave and extends along the axial direction, the second guide hole extends from the bottom of the processing groove in a concave manner, the large end of the second drill bush is supported in the processing groove and used for guiding the position and the direction of the second processing hole of the same group of processing hole groups, the exposed ends of the second drill bushes respectively positioned in the corresponding second guide holes are consistent in height in the processing groove, the position and the direction of the second processing hole of different groups of processing hole groups are guided, and the exposed ends of the second drill bushes respectively positioned in the corresponding second guide holes are different in height in the processing groove.

Furthermore, the clamping seat assembly comprises a supporting block fixedly connected with the end face of the second multi-square support, a pressing plate hinged with the supporting block and a locking piece hinged with the supporting block; the pressing plate is used for being matched with the supporting block so as to clamp the excircle of the tubular shaft to be machined from two sides of the tubular shaft to be machined; the locking piece is used for locking and fixing the pressure plate and the supporting block relatively.

Furthermore, the top of the supporting block is provided with a concave and arc-shaped first mounting groove, and the first mounting groove is used for supporting the second end of the tubular shaft to be processed from one side of the tubular shaft to be processed; the section of the pressing plate is L-shaped, the short edge of the pressing plate is hinged with the supporting block, the end part of the long edge of the pressing plate is provided with a notch groove which vertically penetrates through the long edge of the pressing plate, the inner wall of the long edge of the pressing plate is provided with a concave and arc-shaped second mounting groove, and the second mounting groove is matched with the first mounting groove to clamp the second end of the tubular shaft to be processed; the retaining member includes tip and the articulated connecting rod of rest pad and lock nut of threaded connection on the connecting rod excircle, and the connecting rod is arranged in wearing to locate the breach groove, and lock nut is arranged in the outer wall that the top was supported the long limit of clamp plate so that clamp plate and rest pad pass through the relative locking of connecting rod and fix.

Furthermore, a plurality of first inner grooves which are concave inwards are arranged on the inner wall of the mounting positioning hole in the mounting positioning body, the first inner grooves are sequentially arranged at intervals along the circumferential direction of the mounting positioning hole, and each first inner groove extends along the axial direction of the mounting positioning hole; the inner walls of the first mounting groove and the second mounting groove are respectively provided with a plurality of concave second inner grooves, the plurality of second inner grooves are sequentially arranged at intervals along the circumferential direction of the corresponding first mounting groove or the second mounting groove, and the second inner grooves extend along the axial direction.

According to another aspect of the present invention, there is also provided a method for drilling a tubular shaft part, which is used for machining and forming a tubular shaft to be machined into a formed tubular shaft, and includes the following steps: s10: clamping and positioning a pipe shaft to be machined into the pipe shaft part drilling machining tool in any one of the above manners; s20: sequentially processing a plurality of first processing holes by utilizing the indexing function of a supporting support of the clamping indexing base assembly; s30: selecting any first machining hole as a reference hole, and machining a group of second machining holes on the same rotating bus as the reference hole; s40: loosening the pipe shaft to be machined, rotating the pipe shaft by an angle alpha, inserting the indexing bolt into the corresponding second machined holes machined in the previous group, locking and fixing the pipe shaft to be machined again, and machining a group of second machined holes adjacent to the second machined holes in the previous group; s50: and repeating the step S40 until all the second machining holes are machined.

The invention has the following beneficial effects:

when the number of groups of processing hole groups on the forming pipe shaft is the same as that of the processing hole groups on the object part in the prior art, the pipe shaft to be processed can be processed only by clamping twice and indexing rotation once when the pipe shaft to be processed is clamped and positioned for drilling by adopting the pipe shaft part drilling tool for the invention, the processing operation is simple, the labor intensity of workers is low, and the processing efficiency is high; when the number of groups of the processing hole groups is increased and the number of the first processing holes is also increased, the clamping frequency and the rotating frequency of the part are increased in a superposition manner in the processing process when the tool clamping and positioning part in the prior art is used for processing, namely when the number of the first processing holes is increased, the clamping frequency and the rotating frequency are increased, the number of the processing hole groups is increased, and the clamping frequency and the rotating frequency are also increased, so that the processing operation is very complicated, the labor intensity of workers is high, and the processing efficiency is very low; when the tool clamping positioning part is used for machining the first machined hole, the indexing function of the supporting support of the clamping indexing seat assembly is used for indexing, and the tubular shaft to be machined is not clamped and fixed again, so that the distances between the machined first machined holes and the end surface of the first end of the formed tubular shaft are equal, the indexing precision of the supporting support is high, the machining of the first machined hole cannot be out of tolerance, and the machining precision of the formed tubular shaft is high; compared with the tool in the prior art, the tool has the advantages that the structure for realizing clamping positioning and indexing is less, and the indexing is simple by adopting the supporting support, so that the tool is simple in structure and light in weight, and is convenient to clamp, index, operate and carry;

when the method for drilling and processing the tubular shaft parts is adopted for processing, the number of groups of processing hole groups on the forming tubular shaft is the same as the number of groups of processing hole groups on the object part in the prior art, when the method is adopted for processing, the tubular shaft to be processed can be processed by only clamping twice and indexing rotation once, the processing operation is simple, the labor intensity of workers is low, and the processing efficiency is high; when the number of groups of the processing hole groups is increased and the number of the first processing holes is also increased, the clamping frequency and the rotating frequency of the part are increased in a superposed manner in the processing process when the tool in the prior art is used for clamping and positioning the part to be processed, namely, when the number of the first processing holes is increased, the clamping frequency and the rotating frequency are increased, the number of the processing hole groups is increased, and the clamping frequency and the rotating frequency are also increased, so that the processing operation is very complicated, the labor intensity of workers is high, and the processing efficiency is very low; when the machining method is adopted to machine the first machined hole, the indexing function of the supporting support for clamping the indexing seat assembly is adopted to index, and the pipe shaft to be machined is not clamped and fixed again, so that the distances between the machined first machined holes and the end surface of the first end of the formed pipe shaft are equal, the indexing precision of the supporting support is high, the machining of the first machined hole cannot be out of tolerance, and the machining precision of the formed pipe shaft is high.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural diagram of an object part to be machined in the prior art;

FIG. 2 is a schematic view of a formed tube shaft to be machined according to the present invention;

FIG. 3 is a schematic view of the pipe shaft type part drilling tool clamping and positioning state of the pipe shaft to be machined according to the preferred embodiment of the invention;

FIG. 4 is a schematic sectional view taken along line H-H in FIG. 3;

FIG. 5 is a schematic view of the indexing latch of FIG. 3;

FIG. 6 is a schematic diagram of the P-direction structure of FIG. 3;

fig. 7 is a schematic sectional view along direction G-G in fig. 3.

Description of the figures

10. A pipe shaft to be processed; 20. forming a tubular shaft; 201. a first machining hole; 202. a second machining hole; 30. clamping the indexing seat assembly; 302. a first guide hole; 303. a second guide hole; 304. a support base; 305. mounting holes; 306. processing a tank; 31. a first multi-square support; 311. a limiting support; 32. a second multi-square support; 321. mounting a support; 33. installing a positioning body; 40. a clamping seat assembly; 41. a support block; 42. pressing a plate; 421. a notch groove; 43. a locking member; 431. a connecting rod; 432. locking the nut; 50. indexing bolts; 60. a first drill bushing; 70. a second drill bushing; 80. and a guide bush.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.

Referring to fig. 2 and 3, a preferred embodiment of the present invention provides a drilling tool for a pipe shaft part, which is used for clamping and positioning a pipe shaft 10 to be processed so that a drilling device processes and forms the pipe shaft 10 to be processed into a formed pipe shaft 20, a plurality of first processing holes 201 are formed in an outer circle of a first end of the formed pipe shaft 20, the first processing holes are uniformly arranged at intervals in a circumferential direction, a plurality of sets of processing holes are further formed in the outer circle of the formed pipe shaft 20, the sets of processing holes are arranged at intervals in the circumferential direction of the formed pipe shaft 20, one of the processing holes and one of the first processing holes 201 are arranged in the same rotating bus, a central angle α is formed between two adjacent sets of processing holes, and a plurality of second processing holes 202 in two adjacent sets of processing holes are arranged in a staggered manner one by one, and the tool: the pipe shaft machining fixture comprises a clamping indexing seat assembly 30, wherein an inwards-concave installation positioning hole is formed in the side wall of the clamping indexing seat assembly 30 and used for installing the pipe shaft 10 to be machined and conducting circumferential and axial positioning on the pipe shaft 10 to be machined, the clamping indexing seat assembly 30 is connected with a clamping seat assembly 40, and the clamping seat assembly 40 is used for clamping and fixing a second end, exposed out of the installation positioning hole, of the pipe shaft 10 to be machined. The outer wall of the clamping and indexing seat assembly 30 is provided with a plurality of first guide holes 302 which are uniformly arranged at intervals along the circumferential direction, the first guide holes 302 are arranged perpendicular to the mounting and positioning holes and are communicated with the mounting and positioning holes so as to be used for guiding the position and the direction of the first machining hole 201 to be machined on the tubular shaft 10 to be machined, a supporting support 304 which is arranged on the clamping and indexing seat assembly 30 and used for supporting on a workbench of the drilling and machining equipment is in a regular polygon shape, the number of the edges of the supporting support 304 is twice that of the first guide holes 302, and the supporting support 304 is used for indexing the first guide holes 302 when the clamping and indexing seat assembly 30 is rotated. The outer wall of the clamping indexing base assembly 30 is further provided with a plurality of second guide holes 303 which are sequentially arranged at intervals along the axial direction, the second guide holes 303 are arranged perpendicular to the installation positioning holes and are communicated with the installation positioning holes, the plurality of second guide holes 303 and one of the first guide holes 302 share a rotating bus, the plurality of second guide holes 303 are used for guiding the position and the direction of the second machining hole 202 to be machined on the pipe shaft 10 to be machined, the clamping indexing base assembly 30 is further connected with an indexing bolt 50 which has an alpha central angle with the second guide hole 303 to be machined, and the indexing bolt 50 is used for being inserted into the second machining hole 202 of the previous row of machined machining hole group to index the next row of machining hole group.

When the tool for drilling the tubular shaft part is adopted, the first end of the tubular shaft 10 to be machined is inserted into the installation positioning hole from the side wall of the clamping and indexing seat assembly 30 until the tubular shaft 10 to be machined cannot be inserted, the tubular shaft 10 to be machined is positioned along the circumferential direction and the axial direction through the installation positioning hole, the second end of the tubular shaft 10 to be machined is exposed out of the installation positioning hole, then the clamping seat assembly 40 is adopted to clamp and fix the second end of the tubular shaft 10 to be machined, so that the tubular shaft 10 to be machined is clamped and positioned, then the plurality of first machining holes 201 are sequentially machined by utilizing the indexing function of the supporting support 304 of the clamping and indexing seat assembly 30, then any one first machining hole 201 is selected as a reference hole, a group of second machining holes 202 on the same rotating bus as the reference hole is machined, then the second end of the tubular shaft 10 to be machined is loosened, the indexing bolt 50 is inserted into the corresponding second machining hole 202 by rotating the alpha angle and is locked and fixed by After the shaft 10 is machined, the next set of second machining holes 202 adjacent to the first set of second machining holes 202 are machined, and the step is repeated until all the second machining holes 202 are machined, so that the drilling of the shaft 10 to be machined is completed.

When the number of groups of processing hole groups on the forming tubular shaft 20 is the same as that of the processing hole groups on the object part in the prior art, when the tubular shaft 10 to be processed is clamped and positioned by the tubular shaft part drilling tool for drilling and processing, the tubular shaft 10 to be processed can complete the processing of the part only by clamping twice and indexing rotation once, the processing operation is simple, the labor intensity of workers is low, and the processing efficiency is high; when the number of groups of the processing hole groups is increased and the number of the first processing holes is also increased, the clamping frequency and the rotating frequency of the part are increased in a superposition manner in the processing process when the tool clamping and positioning part in the prior art is used for processing, namely when the number of the first processing holes is increased, the clamping frequency and the rotating frequency are increased, the number of the processing hole groups is increased, and the clamping frequency and the rotating frequency are also increased, so that the processing operation is very complicated, the labor intensity of workers is high, and the processing efficiency is very low; when the tool clamping positioning part is used for machining the first machining hole 201, the indexing function of the supporting support 304 of the clamping indexing seat assembly 30 is used for indexing, and the tubular shaft 10 to be machined is not clamped and fixed again, so that the distances between the machined first machining holes 201 and the end surface of the first end of the formed tubular shaft 20 are equal, the indexing precision of the supporting support 304 is high, the machining of the first machining holes 201 cannot be out of tolerance, and the machining precision of the formed tubular shaft 20 is high; compared with the tool in the prior art, the tool has the advantages that the structure for realizing clamping positioning and indexing is less, and the indexing is simple by adopting the supporting support 304, so that the tool is simple in structure and light in weight, and is convenient to clamp, index, operate and carry.

Optionally, as shown in fig. 3, the clamping dividing seat assembly 30 includes a first multi-square support 31, a second multi-square support 32, and a mounting and positioning body 33, and the mounting and positioning body 33 is detachably connected between the first multi-square support 31 and the second multi-square support 32. The mounting positioning hole penetrates through the second multi-square support 32 and the mounting positioning body 33 from the end surface of the second multi-square support 32 to the end surface of the first multi-square support 31 connected with the mounting positioning body 33 in a concave manner. The first multi-support 31 and the second multi-support 32 are respectively provided with a support 304. The first guiding hole 302 and the second guiding hole 303 are respectively disposed on the installation positioning body 33, and the indexing bolt 50 is connected to the installation positioning body 33.

In this alternative, as shown in fig. 6, the first multi-square support 31 includes a support 304 having a regular polygon cross section, and a limit support 311 fixedly connected to an end surface of the support 304, where an end surface of the limit support 311 abuts against the end surface of the first end of the installation positioning body 33 and the end surface of the first end of the pipe shaft 10 to be processed, respectively, so as to limit the pipe shaft 10 to be processed in the axial direction. Specifically, as shown in fig. 6, the support bracket 304 and the limit bracket 311 are integrally formed to enhance the overall structural strength of the first square bracket 31. The cross section of the limiting support 311 is a regular polygon, the number of the limiting support 311 is the same as that of the supporting support 304, and the size of the limiting support 311 is smaller than that of the supporting support 304, so that the weight of the first multi-square support 31 is reduced, the clamping and indexing seat assembly 30 can be conveniently turned over in the drilling process, on the other hand, in order to improve the indexing precision of the clamping and indexing seat assembly 30, the requirement on the machining precision of each supporting surface of the supporting support 304 is high, therefore, the first multi-square support 31 is arranged to comprise the supporting support 304 and the limiting support 311, namely, the supporting area is reduced, the machining difficulty of the supporting support 304 is further reduced, and the machining precision is improved.

In this alternative, as shown in fig. 7, the second multi-side support 32 includes a support 304 having a regular polygon cross section, and an installation support 321 fixedly connected to an end surface of the support 304, an end surface of the installation support 321 abuts against a second end surface of the installation positioning body 33, and the installation positioning hole vertically penetrates through the second multi-side support 32 from the end surface of the support 304 of the second multi-side support 32 along an axial direction. Specifically, as shown in fig. 7, support bracket 304 and mounting bracket 321 are integrally formed to enhance the overall structural strength of second multiparty bracket 32. The cross section of the mounting support 321 is a regular polygon, the number of the sides of the mounting support 321 is the same as that of the support 304, and the size of the mounting support 321 is smaller than that of the support 304, so that the weight of the second multi-square support 32 is reduced, the clamping and indexing base assembly 30 can be conveniently turned over in the drilling process, and the machining precision of each supporting surface of the support 304 is high for improving the indexing precision of the clamping and indexing base assembly 30, so that the second multi-square support 32 is arranged to comprise the support 304 and the mounting support 321, that is, the supporting area is reduced, the machining difficulty of the support 304 is further reduced, and the machining precision is improved.

In this alternative, as shown in fig. 3, 4 and 5, the mounting and positioning body 33 is in a column shape, and two ends of the mounting and positioning body are respectively connected with the first multi-square support 31 and the second multi-square support 32 after abutting against each other. The mounting positioning hole penetrates the mounting positioning body 33 along the axis. The plurality of first guiding holes 302 are uniformly arranged at intervals along the circumferential direction of the mounting and positioning body 33 at a first end of the mounting and positioning body 33 close to the first multi-square support 31, and each first guiding hole 302 extends inwards from the outer wall of the mounting and positioning body 33 along the radial direction. The plurality of second guiding holes 303 are sequentially arranged on the mounting positioning body 33 at intervals along the axial direction of the mounting positioning body 33, the plurality of second guiding holes 303 and one of the first guiding holes 302 share a rotating bus, and each second guiding hole 303 vertically penetrates through the mounting positioning body 33 from the outer wall of the mounting positioning body 33 along the radial direction. Specifically, since the second machining hole 202 is a through hole and in order to prevent machining chips generated during machining from being jammed in the second guide hole 303 and affecting the machining of the second machining hole 202, the second guide hole 303 is provided as a through hole so as to facilitate the discharge of the machining chips. The outer wall of the mounting and positioning body 33 is further provided with a mounting hole 305 for mounting the indexing bolt 50, an α central angle is formed between the mounting hole 305 and the second guiding hole 303, and the mounting hole 305 extends from the outer wall of the mounting and positioning body 33 along the radial direction and is recessed and communicated with the mounting and positioning hole.

Optionally, as shown in fig. 3 and 4, the tool further includes a plurality of first drill bushings 60, a plurality of second drill bushings 70, and a guide bushing 80. The plurality of first drill bushings 60 are respectively arranged in the corresponding first guide holes 302 so as to limit and guide the movement of the drilling tool on the drilling processing equipment and prevent the drilling tool from damaging the first guide holes 302 and further influencing the positioning and guiding precision of the first guide holes 302. The plurality of second drill bushings 70 are respectively mounted in the corresponding second guide holes 303 to limit and guide the movement of the drilling tool on the drilling equipment, and prevent the drilling tool from damaging the second guide holes 303 and further influencing the positioning and guiding precision of the second guide holes 303. The guide bushing 80 is installed in the installation hole 305 to limit and guide the insertion of the index pin 50 into the second machining hole 202, and prevent the installation hole 305 from being scratched during the insertion of the index pin 50 into the installation hole 305, thereby affecting the positioning and guiding accuracy of the installation hole 305. The top ends of the first drill bushing 60, the second drill bushing 70 and the guide bushing 80 do not extend out of the positioning body 33, so as to avoid interference with the drilling tool.

Preferably, as shown in fig. 3 and 4, the cross section of the mounting and positioning body 33 is a regular polygon, and the number of sides of the mounting and positioning body 33 is equal to the number of sides of the supporting seat 304. The top edge of the mounting and positioning body 33 is provided with a concave and axially extending processing groove 306, the second guide hole 303 extends from the bottom of the processing groove 306 in a concave manner, the large end of the second drill sleeve 70 is supported in the processing groove 306, and is used to guide the position and direction of the second tooling hole 202 of the same set of tooling holes, and the exposed ends of the plurality of second drill bushings 70 respectively positioned in the corresponding second guide holes 303 are made to have the same height in the machining groove 306, and is used to guide the position and direction of the second tooling hole 202 of a different set of tooling holes, and the exposed ends of the plurality of second drill bushings 70 respectively located in the corresponding second guide holes 303 are made different in height within the machining groove 306, by making the heights of the second drill bushings 70 in the different groups of second guide holes 303 different, the second guiding holes 303 of different groups are further marked to prevent processing errors in the processing process.

Alternatively, as shown in fig. 3 and 7, the clamping seat assembly 40 includes a supporting block 41 fixedly connected to the end surface of the second multi-side support 32, a pressing plate 42 hinged to the supporting block 41, and a locking member 43 hinged to the supporting block 41. The pressing plate 42 is used to cooperate with the supporting block 41 to clamp the outer circle of the second end of the pipe shaft 10 to be machined from both sides of the pipe shaft 10 to be machined. The locking member 43 is used for locking and fixing the pressure plate 42 and the supporting block 41 relatively.

In this alternative, as shown in fig. 3 and 7, the top of the supporting block 41 is provided with a concave and arc-shaped first mounting groove for supporting the second end of the pipe shaft 10 to be machined from one side of the pipe shaft 10 to be machined. The cross-section of clamp plate 42 is "L" type, and the minor face of clamp plate 42 is articulated with supporting block 41, and the tip on the long limit of clamp plate 42 is equipped with the breach groove 421 that runs through the long limit of clamp plate 42 perpendicularly, is equipped with the indent on the inner wall on the long limit of clamp plate 42 and is curved second mounting groove, and the second mounting groove sets up with the cooperation of first mounting groove in order to press from both sides the second end of treating processing hollow shaft 10. The locking member 43 includes a connecting rod 431 with an end portion hinged to the support block 41 and a locking nut 432 screwed on an outer circle of the connecting rod 431, the connecting rod 431 is arranged in the notch groove 421 in a penetrating manner, and the locking nut 432 is used for abutting against an outer wall surface of a long side of the pressing plate 42 so that the pressing plate 42 and the support block 41 are relatively locked and fixed through the connecting rod 431. The clamping seat assembly 40 is simple in structure and light in weight, clamping, fixing and disassembling operations of the tubular shaft 10 to be machined are simple, drilling machining efficiency can be improved, and labor intensity of workers is reduced.

Preferably, a plurality of first inner grooves are disposed on an inner wall of the mounting positioning hole in the mounting positioning body 33, the first inner grooves are sequentially spaced along a circumferential direction of the mounting positioning hole, and each first inner groove extends along an axial direction of the mounting positioning hole. Respectively be equipped with the second inner groovy of many indents on the inner wall of first mounting groove and second mounting groove, many second inner groovies are along the circumference interval setting in proper order of the first mounting groove or the second mounting groove that correspond to set up, and each second inner groovy extends along the axial, through the setting of first inner groovy and second inner groovy, reduce installation locating hole and first mounting groove and second mounting groove and wait to process the area of contact of hollow shaft 10, and then make and wait to process more accurate location of hollow shaft 10 in the installation locating hole and enclose the clamping hole that establishes and form by first mounting groove and second mounting groove, it is in installation locating hole and clamping hole to change the dress simultaneously and press from both sides.

Referring to fig. 2 and 3, the preferred embodiment of the present invention further provides a method for drilling a pipe shaft part, which is used for machining and forming the pipe shaft 10 to be machined into the formed pipe shaft 20, and comprises the following steps:

s10: clamping and positioning the tubular shaft 10 to be machined into the tubular shaft part drilling machining tool in any one of the above manners.

S20: the plurality of first machining holes 201 are sequentially machined by utilizing the indexing function of the support base 304 of the clamping indexing base assembly 30.

S30: any first machining hole 201 is selected as a reference hole, and a group of second machining holes 202 which are on the same rotating bus as the reference hole are machined.

S40: after the pipe shaft 10 to be machined is loosened and rotated by the angle alpha, the indexing bolts 50 are inserted into the corresponding second machining holes 202 which are machined in the previous group, and the pipe shaft 10 to be machined is locked and fixed again, and then a group of second machining holes 202 adjacent to the second machining holes 202 in the previous group are machined.

S50: step S40 is repeated until all the second machining holes 202 are machined.

When the tubular shaft 10 to be processed is processed and formed into the formed tubular shaft 20 by adopting the tubular shaft part drilling processing method, firstly, clamping and positioning a tubular shaft 10 to be machined into the tubular shaft part drilling machining tool in any one of the above manners, then a plurality of first machining holes 201 are sequentially machined by utilizing the indexing function of the supporting seat 304 of the clamping indexing seat assembly 30, then, any first processing hole 201 is selected as a reference hole, a group of second processing holes 202 on the same rotating bus as the reference hole are processed, then the pipe shaft 10 to be machined is loosened, the indexing bolt 50 is inserted into the corresponding second machining hole 202 by rotating the angle alpha, and the pipe shaft 10 to be machined is locked and fixed again, and machining a group of second machining holes 202 adjacent to the first group of second machining holes 202, and finally repeating the step until all the second machining holes 202 are machined, so that the drilling machining of the pipe shaft 10 to be machined is completed.

When the method for drilling and processing the pipe shaft type parts is adopted for processing, when the group number of the processing hole groups on the forming pipe shaft 20 is the same as that of the processing hole groups on the object part in the prior art, when the method for processing is adopted for processing, the pipe shaft 10 to be processed can complete the processing of the parts only by clamping twice and indexing rotation once, the processing operation is simple, the labor intensity of workers is low, and the processing efficiency is high; when the number of groups of the processing hole groups is increased and the number of the first processing holes is also increased, the clamping frequency and the rotating frequency of the part are increased in a superposed manner in the processing process when the tool in the prior art is used for clamping and positioning the part to be processed, namely, when the number of the first processing holes is increased, the clamping frequency and the rotating frequency are increased, the number of the processing hole groups is increased, and the clamping frequency and the rotating frequency are also increased, so that the processing operation is very complicated, the labor intensity of workers is high, and the processing efficiency is very low; when the machining method of the invention is used for machining the first machined hole 201, because the indexing function of the supporting support 304 of the clamping and indexing seat assembly 30 is used for indexing, and the tubular shaft 10 to be machined is not clamped and fixed again, the distances from the machined first machined holes 201 to the first end surface of the formed tubular shaft 20 are equal, and the indexing precision of the supporting support 304 is high, so that the machining of the first machined holes 201 cannot be out of tolerance, and the machining precision of the formed tubular shaft 20 is high.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a shaft class part drilling processing frock for treating to process hollow shaft (10) and carry out the clamping location so that drilling processing equipment will treat that processing hollow shaft (10) machine-shaping is shaping hollow shaft (20), be equipped with on the excircle of shaping hollow shaft (20) first end along a plurality of first processing holes (201) that the even interval of circumference set up, still be equipped with on the excircle of shaping hollow shaft (20) along the axial interval and arrange unitized processing punch combination, multiunit processing punch combination edge the circumference interval of shaping hollow shaft (20) is laid, one of them is a set of processing punch combination and one of them first processing hole (201) co-rotation generating line, adjacent two sets of have centre of a circle angle alpha between the processing punch combination, and adjacent two sets of a plurality of second dislocation processing holes (202) in the processing punch combination are laid each other, its characterized in that, the frock includes:

the pipe shaft machining fixture comprises a clamping and indexing seat assembly (30), wherein an inwards-concave installation positioning hole is formed in the side wall of the clamping and indexing seat assembly (30), the installation positioning hole is used for installing the pipe shaft (10) to be machined and carrying out circumferential and axial positioning on the pipe shaft (10) to be machined, the clamping and indexing seat assembly (30) is connected with a clamping seat assembly (40), and the clamping seat assembly (40) is used for clamping and fixing the second end, exposed out of the installation positioning hole, of the pipe shaft (10) to be machined;

a plurality of first guide holes (302) which are uniformly arranged at intervals along the circumferential direction are formed in the outer wall of the clamping dividing seat assembly (30), the first guide holes (302) are perpendicular to the installation positioning holes and are communicated with the installation positioning holes so as to be used for guiding the positions and directions of the first machining holes (201) to be machined in the pipe shaft (10) to be machined, a supporting support (304) which is arranged on the clamping dividing seat assembly (30) and used for supporting a worktable of the drilling machining equipment is in a regular polygon shape, the number of the edges of the supporting support (304) is twice of the number of the first guide holes (302), and the supporting support (304) is used for dividing the first guide holes (302) when the clamping dividing seat assembly (30) is rotated;

the outer wall of the clamping indexing seat assembly (30) is also provided with a plurality of second guide holes (303) which are sequentially arranged at intervals along the axial direction, the second guide hole (303) is arranged perpendicular to the mounting positioning hole and communicated with the mounting positioning hole, the plurality of second guide holes (303) and one of the first guide holes (302) have the same rotating bus, the plurality of second guide holes (303) are used for guiding the position and the direction of the second machining hole (202) to be machined on the pipe shaft (10) to be machined, the clamping indexing seat assembly (30) is also connected with an indexing bolt (50) which has an alpha central angle with the second guide hole (303) to be processed, the indexing bolt (50) is used for being inserted into the second machining hole (202) of the machined machining hole group in the previous row so as to index the machining hole group in the next row.

2. The pipe shaft part drilling tool according to claim 1,

the clamping dividing seat assembly (30) comprises a first multi-side support seat (31), a second multi-side support seat (32) and an installation positioning body (33), wherein the installation positioning body (33) is detachably connected between the first multi-side support seat (31) and the second multi-side support seat (32);

the mounting positioning hole is recessed from the end surface of the second multi-side support (32) and sequentially penetrates through the second multi-side support (32) and the mounting positioning body (33) to the end surface of the first multi-side support (31) connected with the mounting positioning body (33);

the first multi-way support (31) and the second multi-way support (32) are respectively provided with the supporting support (304);

the first guide hole (302) and the second guide hole (303) are respectively arranged on the installation positioning body (33), and the indexing bolt (50) is connected to the installation positioning body (33).

3. The pipe shaft part drilling tool according to claim 2,

the first multi-side support (31) comprises a supporting support (304) with a regular polygon cross section and a limiting support (311) fixedly connected with the end surface of the supporting support (304), and the end surface of the limiting support (311) is respectively abutted against the end surface of the first end of the mounting and positioning body (33) and the end surface of the first end of the pipe shaft (10) to be machined so as to limit the pipe shaft (10) to be machined along the axial direction;

the second multi-side support (32) comprises a supporting support (304) with a regular polygon cross section and an installation support (321) fixedly connected with the end face of the supporting support (304), the end face of the installation support (321) abuts against the end face of the second end of the installation positioning body (33), and the installation positioning hole penetrates through the second multi-side support (32) from the end face of the supporting support (304) of the second multi-side support (32) along the axial direction.

4. The pipe shaft part drilling tool according to claim 2,

the mounting positioning body (33) is columnar, and two ends of the mounting positioning body are respectively connected with the first multi-side support (31) and the second multi-side support (32) after being propped against each other;

the mounting positioning hole penetrates through the mounting positioning body (33) along the axis;

the first guide holes (302) are uniformly arranged at intervals on a first end, close to the first multi-side support (31), of the installation positioning body (33) along the circumferential direction of the installation positioning body (33), and each first guide hole (302) extends inwards from the outer wall of the installation positioning body (33) along the radial direction;

the second guide holes (303) are sequentially arranged on the installation positioning body (33) at intervals along the axial direction of the installation positioning body (33), the second guide holes (303) and one of the first guide holes (302) share a rotating bus, and each second guide hole (303) penetrates through the installation positioning body (33) from the outer wall of the installation positioning body (33) along the radial direction;

the outer wall of the installation positioning body (33) is further provided with an installation hole (305) used for installing the indexing bolt (50), an alpha central angle is formed between the installation hole (305) and the second guide hole (303), and the installation hole (305) extends inwards from the outer wall of the installation positioning body (33) along the radial direction and is communicated with the installation positioning hole.

5. The pipe shaft part drilling tool according to claim 4,

the drilling tool for the tubular shaft parts further comprises a plurality of first drill bushings (60), a plurality of second drill bushings (70) and a guide bushing (80);

the first drill bushing (60) is respectively arranged in the corresponding first guide hole (302) so as to limit and guide the movement of a drilling tool on the drilling processing equipment;

the second drill bushing (70) is respectively arranged in the corresponding second guide hole (303) so as to limit and guide the movement of a drilling tool on the drilling processing equipment;

the guide bush (80) is arranged in the mounting hole (305) to limit and guide the insertion of the indexing bolt (50) into the second machining hole (202);

the top ends of the first drill bushing (60), the second drill bushing (70) and the guide bushing (80) do not extend out of the mounting positioning body (33).

6. The pipe shaft part drilling tool according to claim 5,

the cross section of the mounting and positioning body (33) is in a regular polygon shape, and the number of the sides of the mounting and positioning body (33) is equal to that of the supporting seat (304);

the top edge of the mounting and positioning body (33) is provided with a concave processing groove (306) extending along the axial direction, the second guide hole (303) extends from the bottom of the processing groove (306) inwards, the big end of the second drill sleeve (70) is supported in the processing groove (306), and for guiding the position and orientation of the second machining hole (202) of the same set of machining holes, and the heights of the exposed ends of the second drill bushings (70) respectively positioned in the corresponding second guide holes (303) in the machining groove (306) are consistent, and for guiding the position and orientation of the second machining holes (202) of different sets of the machining hole groups, and making the heights of the exposed ends of the second drill bushings (70) in the processing groove (306) different, wherein the exposed ends are respectively located in the corresponding second guide holes (303).

7. The pipe shaft part drilling tool according to claim 4,

the clamping seat assembly (40) comprises a supporting block (41) fixedly connected with the end face of the second multi-side support (32), a pressing plate (42) hinged with the supporting block (41), and a locking piece (43) hinged with the supporting block (41);

the pressing plate (42) is used for being matched with the supporting block (41) so as to clamp the outer circle of the pipe shaft (10) to be machined from two sides of the pipe shaft (10) to be machined;

the locking piece (43) is used for locking and fixing the pressure plate (42) and the supporting block (41) relatively.

8. The pipe shaft part drilling tool according to claim 7,

the top of the supporting block (41) is provided with a concave and arc-shaped first mounting groove, and the first mounting groove is used for supporting the second end of the tubular shaft (10) to be machined from one side of the tubular shaft (10) to be machined;

the cross section of the pressing plate (42) is L-shaped, the short side of the pressing plate (42) is hinged to the supporting block (41), a notch groove which vertically penetrates through the long side of the pressing plate (42) is formed in the end part of the long side of the pressing plate (42), a concave and arc-shaped second mounting groove is formed in the inner wall of the long side of the pressing plate (42), and the second mounting groove and the first mounting groove are arranged in a matched mode to clamp the second end of the tubular shaft (10) to be machined;

retaining member (43) include the tip with supporting block (41) articulated connecting rod (431) and threaded connection in lock nut (432) on connecting rod (431) excircle, connecting rod (431) are used for wearing to locate in the breach groove, lock nut (432) are used for the top to the outer wall face on long limit of clamp plate (42) so that clamp plate (42) with supporting block (41) pass through connecting rod (431) are fixed to the locking relatively.

9. The pipe shaft part drilling tool according to claim 8,

a plurality of first inner grooves which are concave inwards are arranged on the inner wall of the mounting positioning hole in the mounting positioning body (33), the first inner grooves are sequentially arranged at intervals along the circumferential direction of the mounting positioning hole, and each first inner groove extends along the axial direction of the mounting positioning hole;

the inner walls of the first mounting groove and the second mounting groove are respectively provided with a plurality of inwards concave second inner grooves, the second inner grooves are sequentially arranged at intervals along the circumferential direction of the first mounting groove or the second mounting groove which is correspondingly arranged, and the second inner grooves extend along the axial direction.

10. A drilling processing method for pipe shaft parts is used for processing and forming a pipe shaft (10) to be processed into a formed pipe shaft (20), and is characterized by comprising the following steps:

s10: clamping and positioning a pipe shaft (10) to be machined into the pipe shaft part drilling machining tool according to any one of claims 1 to 9;

s20: sequentially processing a plurality of first processing holes (201) by utilizing the indexing function of a supporting support (304) of the clamping indexing seat assembly (30);

s30: selecting any one first machining hole (201) as a reference hole, and machining a group of second machining holes (202) on the same rotating bus as the reference hole;

s40: rotating the pipe shaft (10) to be machined by an angle alpha after loosening the pipe shaft (10) to be machined, inserting an indexing bolt (50) into the corresponding second machined holes (202) which are machined in the previous group, and machining a group of second machined holes (202) adjacent to the second machined holes (202) in the previous group after locking and fixing the pipe shaft (10) to be machined again;

s50: repeating the step S40 until all the second machining holes (202) are machined.